////////////////////////////////////////////////
// DESCRIPTION:
//    Sample GPIO interrupt handler
//
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using System;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using FusionWare.SPOT.Hardware;

namespace GPIOInterrupts
{
    /// <summary>Simple Application to demonstrate GPIO interrupt handling</summary>
    public class Program
    {
        static InterruptPort InterruptPin;
       
        /// <summary>Pin Number for the interrupt</summary>
        /// <remarks>
        /// This constant used in this sample will most likely
        /// not work on your hardware. Every hardware system
        /// has different purposees and uses for GPIO pins so
        /// you should change this to match your hardware.
        /// </remarks>
        const Cpu.Pin IrqPin = ( Cpu.Pin )0;

        /// <summary>Application Entry point</summary>
        /// <remarks>
        /// Sets up an interrupt handler for button SW1 on 
        /// the Tahoe Platform and sleeps for 3 minutes to
        /// allow testing the interrupt handling. 
        /// </remarks>
        public static void Main()
        {
            Debug.Print("InterruptPin Test Application");
            
            // Create a new Interrupt pin 0
            InterruptPin = new InterruptPort( IrqPin
                                            , true
                                            , Port.ResistorMode.Disabled
                                            , Port.InterruptMode.InterruptEdgeHigh
                                            );
            
            // Connect the interrupt event to the handler with a new delegate
            InterruptPin.OnInterrupt += InterruptPin_OnInterrupt;
            
            // put the main thread to sleep for 3 minutes to test the pin interrupt support
            System.Threading.Thread.Sleep(3 * 60 * 1000);

            // disconnect the interrupt event handler
            InterruptPin.OnInterrupt -= InterruptPin_OnInterrupt;
        }

        /// <summary>Handles the interrupt for a GPIO port</summary>
        /// <param name="pin">pin that caused the interrupt</param>
        /// <param name="state">state of the pin at time of the interrupt</param>
        /// <param name="time">time of the interrupt</param>
        /// <remarks>
        /// Handles the interrupt for a GPIO pin by printing out the input paramters to the debug stream.
        /// </remarks>
        static void InterruptPin_OnInterrupt(uint pin, uint state, DateTime time)
        {
            Debug.Print("Got Interrupt on pin " + pin.ToString() + " state=" + (state==0 ? "false" :"true") + "at " + time.ToString());
        }
    }
}
